发明名称 |
DISTORTION EVALUATING APPARATUS AND DISTORTION EVALUATING METHOD |
摘要 |
A distortion evaluating apparatus which can quantitatively evaluate distortion in a measurement object surface is provided. A distortion evaluating apparatus 40 evaluates distortion based on three-dimensional measurement data obtained from a measurement object surface. The apparatus includes a secondary differential means 41 for effecting a secondary differential operation on two-dimensional measurement data of a cross section of the measurement object surface indicative of unevenness therein, thus obtaining curvature data of the cross section, a permissible range setting means 43 for setting a permissible range for the curvature data, based on range of an upper limit value and a lower limit value from a reference value, and a distortion data extracting means 42 for extracting a portion of the curvature data exceeding the set permissible range as distortion data indicative of the distortion in the cross section.
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申请公布号 |
EP1921417(A1) |
申请公布日期 |
2008.05.14 |
申请号 |
EP20060768084 |
申请日期 |
2006.07.11 |
申请人 |
DAIHATSU MOTOR CO., LTD. |
发明人 |
OUE, SEIJI;KATSUMA, HIDETO;TACHI, YOICHI;IKEDA, KOTARO;NAKASAKU, SHINYA |
分类号 |
G01B21/20;G01B11/24;G01B11/25 |
主分类号 |
G01B21/20 |
代理机构 |
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主权项 |
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地址 |
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